I have a Carruthers Sub-1 for sale, here's the link to Carruther's site:http://www.carruthersguitars.com/pages/bassmain/bassmain.htm I am selling this because I purchased a Clevinger, which suits me a little better....wife says somebody has got to go!
Details:
4 string, sunburst finish, 3/4 size. It uses standard double bass strings (currently strung with Spirocores). It plays easily, has nice growl and sustain. There are position markers on the right-hand edge of the neck, they are helpful and unobtrusive. I neither use them, nor notice them, but they were handy when I first purchased the bass.
This bass has a great pick up system, with a flexible and reliable preamp, so she is ready to plug into anything- no hassles with buffering etc.
The neck is easily detachable for shipping, or for air travel.
It comes with a bag, and a stand that holds the bass for performing. There is a new stand that is availble (it is one the website), but that has a 175.00 upcharge. It looks good though and I would purchase it if I were going to keep this bass.
Here is a link with clips of me playing the bass with a big band, the bass is low in the mix, but you can get a sense of how the bass looks and how it blends with the band.http://www.rpbigband.com/video.htm

I am looking to get 1000., buyer pays shipping. I would ship anywhere; the bass is actually fairly small when disassembled. I would consider trades for various wide-neck 6-strings electrics (with preference to Single- cut body styles), and also to plywood uprights (no Larks, or 400. Ebay specials). In either case, I can add cash for the right instrument.
PM me for more details.

Had a couple of questions about the preamp. It has three knobs; a volume, tremble, and bass. The bass control is concentric, the inner knob is a midrange sweep control. Its very versatile and quiet. Not sure if it is 9v or 18v, but its very clean.
JS

Hi Francois, you are right; its been a while since I have had her out. The bottom two knobs are both concentric, and there is no "tremble" knob has my earlier post stated. Sam's mod of the preamp sounds like a very worthwhile project.
Many thanks guys
Jon